'Feasts' in the Bible

“Speak to the children of Israel and say to them, ‘The appointed times (established feasts) of the Lord which you shall proclaim as holy convocations—My appointed times are these:

‘These are the appointed times of the Lord, holy convocations which you shall proclaim at their appointed times:

‘These are the appointed times (established feasts) of the Lord, which you shall proclaim to be holy convocations, to present an offering by fire to the Lord, a burnt offering and a grain offering, sacrifices and drink offerings, each on its own day.

So Moses declared to the Israelites the appointed feasts of the Lord.